Log-bunk.



A. B. MYHRE.

LOGBUNK.

APPLICATION FILED OCT. 23. 1916.

Patented June 5, 1917. i 3 SHEETS-SHEET I.

A. B. MYHRE.

LOG BUNK.

APPLICATION FILED OCT. 23. I916.

1,228,952. Patented June 5, 1917.

3 SHEETS-SHEET 2.

A, B. MYHRE.

LOG BUNK.

- APPLICATION FILED OCT. 23 1916- 1,228,952. Patented June 5, 1917.

3 SHEETS-SHEET 3- H h f g N 15% 4' LE1 b Q 3 M Q Inrezziar' TAT S FTC LOG-BUN K.

Specification of Letters Patent.

Patented June 5, 1917.

Application filed October 23, 1916. Serial No. 127,046.

To all whom it may concern:

Be it known that I, ARTHUR B. MYHRE, a citizen of the United States, and resident of Tacoma, Pierce county, State of Washington, have invented certain new and useful Improvements in Log-Bunks, of which the following is a specification.

My invention relates to log bunks which are designed for mounting upon flat cars to protect the cars against the damaging effect of loading and unloading logs therefrom and also facilitate both the loading and unloading of logs and the safety of the parties doing this work.

The object of my invention is to improve upon these devices both in simplicity and cost of construction, and in the effectiveness and ease in handling the same.

The features of which my invention is composed will be hereinafter described and then particularly pointed out in the claims.

The accompanying drawings show my device in the type of construction which is now most preferred by me.

Figure 1 is a longitudinal section of a bunk taken just inside of one side wall of the bunk.

Fig. 2 is a top plan view with a portion of the bunk broken away at one end.

Fig. 3 is an end elevation of a bunk with a chock shown in raised position.

Fig. 4 is a transverse section of a bunk taken just outside of the chock, the chock in this case being shown adjusted inward from its outermost position.

Fig. 5 is a longitudinal section through the end of a bunk showing the chock in its lowered position.

Fig. 6 is a similar longitudinal view showin a chock in raised position.-

Fig. is a detail showing one of the lock pins. I

The body or frame of the bunk it is contemplated will be made of iron or steel, cast in the shape desired. The shape of this employs two vertical webs 10, located at the opposite sides of the bunk, and a connecting top web 11. The side webs 10 are extended a slight distance above the top'web 11, so as to form upwardly projecting flanges which engage and support the logs, thereby holding the logs securely against movement endwise the car.

The upper web 11 does not extend continuously from end to end of the bunk. It

is continuous except for two slots 18, which begin at a short distance inward from the outer ends of the bunk and extend a considerable distance toward the center of the bunk. The inward extent of these slots will depend upon the amount of adjustment desired for the chocks.

The bunk is also provided with a central web 14, which is centrally positioned along the axial line of the bunk and also with relation to the length thereof. This web divides the hollow within the bunk into two compartments, in each of which is placed a locking bar 3, by which the chock is held against movement when desired. This central web 14 also serves as one. support for the pivots 30, upon which the chock-locking bars 3 are pivoted. These pivots, as may be seen in Figs. 1 and 2, are located at op- 1posite sides of the center for the respective ars.

The chocks 2 are in triangular form, consisting of an inward inclined web 20 and outer strut, or supporting web, 21, and an anchor arm 22, which latter is of less width than the parts 20 and 21, this width being such as will permit its free movement within the slots 13 of the top web of the bunk.

This anchor arm is provided with a lateral arm or projecting lug 23, located so as to lie just below the top web 11 of the bunk. It is also provided with a second laterally projecting finger or lug 24, which is connected with the lower end of the anchor arm 22 andwell toward the lower part of the bunk. The webs 20 and 21 of the chock are of such width as to fit between the .flanges 12 of the bunk. These flanges form a channel to retain the chock against displacement transversely of the bunk.

The locking bars 3 have one end provided with notches 31, which are of such size as to receive the lowermost of the side projecting arms or lugs 24 of the anchor arm. This lug 24 is adapted to fit in one of the notches 31, whereby the position of the chock may be varied from a point comparatively near the center of the bunk to the extreme outer end thereof.

In order to retain the locking bar 3 in the position. in which the chock is looked, a locking pin 4 is employed, one of the se being shown in detail in Fig. 7 This pin has a main handle 40 and an oifset crank arm 41, by which it may be handled. It also has a lateralprojection 42 located inward from the arm 41, which acts to prevent removal of the locking pin from the bunk.

The side wall of'the bunk, as well as a short central web 15 located at each end of the bunk, are provided with'holes of keyhole shape to permit insertion and removal of the lockingpin 4. The web 42 of the locking pin is to be placed in a verticalposition while being inserted and removed. The weight of the arm 41 will tend to hold the locking pin so as to throw the end of the web 42 downward, in which position it can not be removed. The hole for their reception is so located that the pin will engage the upper sides of the locking bar, at the end of the bunk occupied bythechock controlled thereby, or the lower edge of the modate'the logs being hauled. with the pinsl properly placed, it will be impossible for the shocks to become loosened. When, however, it is desired to unload the logs the proper pins 4 will be removed. 7

This may be done in such way that the last pinto be removed will be the pin which 'controls the end of the bar which is at the opposite side of the car from the chock which is to be tripped. In this way the L safety of the operator is secured. When the receive said web.

locking bar is thrown upward so as to free the finger or lug 24, the chock 2, will be forced outward until it reaches the end of the bunk and drops over the end, as is shown in Fig. 5.

In order to strengthen the c shown it as provided with a web 24 lying in the angle thereof. To accommodate this when it is dropped into the position shown in Fig. 5, I have provided the end of the bunk with a recessor groove 26, adapted to In the 7 condition under which: these logs are unloaded,'it is common'to elevate the railof the track at the side opposite that.

toward which the logs' are to be unloaded.

Because of this, the car and the bunk are at a considerable inclination, which facilitates .the logs being discharged at this side of the car and also assists to cause the chock to slide upon the bunk toward its outer What'I claim as myinvention: 7

1. The combination with; a hollow bunk having a slot in its top web extending from near each end inward and terminating short of the center, and a flange projecting-1 up- 'ock, have I end.

wardly along each edge, a chockslidable lengthwise the channel formed by said flanges and having an anchor arm extending downward through the slot, said arm having a lateral projection at one side just beneath the top web of the bunk andanother lateral projectlon from the lower end of said anchor arm, and a lever pivoted within and extending the length-of the bunk and having notches engaging said latter projection of the anchor arm. 7 7

2. In a logging bunk, in combination, a frame in the form of a beam having separated vertical webs and a connecting top web, said top web having a central slot extending from near each end a material distance towardthe center, said beam also having a vertical-web extendinglengthwise of the central part of the beam, chock'blocks,

each having bearing engagement with the top of the web and an anchorarm extending downward through the slot in'the top web, said anchor arm having a'lateral projection from its lower end, andlocking levers located one at each side of the central web and pivoted, each to its respective side web and to the central web, said levers extending through the length of the bunkand having notches adapted'to receive the side projection from the anchor arm. 1

3; The'combination with a logging bunk having a top web provided with centrally placed longitudinal slots terminating short of its ends, and upwardly projecting flanges along its sides, chocks each having'feet bearing upon the top web between said flanges and an anchor arm extending downward through oneof'said slots, said anchor arms havin a lateral projection just beneath the top we% and a second one at its lower end, and a locking lever for each chock pivoted upon the bunk and extending through the length of the bunk and having notches I in one edge adapted to receive the lowermost of said lateralprojections from the anchor arm. l r s 4. The combination with alogging bunk having a top" web provided with centrally placed longitudinal slots terminating short of its ends, and upwardly projecting flanges along its sides, ch'ocks each having feet bearing upon 7 the top web between said flanges and an anchor arm extending downwardthrough one 0f said slots, said anchor 7 arms having a lateraliprojection I. just beneath'the' top web and a. second one at its lower end, and a locking lever for each chock pivoted upon the bunk and extending through the length of; the bunk and having notches in one'edge' adapted to receive the lowermost of said lateral projections from the anchor arm, and; locking pins having seats in the bunk and adapted to engage said levers to hold themv in locked position.

- j 5.; The combination with 'ajlogging bunk 13o having a top web provided with centrally placed longitudinal slots terminating short of its ends, and upwardly projecting flanges along its sides, chocks each having feet beara 10 extending from its opposite edge, and a locking lever for each chock centrally pivoted upon the bunk and having one end provided with a series of slots in its lower edge adapted to receive the lowermost 0f the lateral projections from the anchor arm, and 15 means for locking said levers.

Signed at Seattle, Wash, this 14th day of October, 1916.

ARTHUR B. MYHRE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

0 Washington, I). 0. 

